ASTROSAT CZTI

Data Quality Report

Orbit 43158

Creation date: 2024-06-27T22:48:45.694183
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T10_9000005856_43158cztM0_level2.fits modeM0/AS1C07_001T10_9000005856_43158cztM0_level2_quad_clean.evt
Size (bytes)351,063,36083,499,840
Size334.8 MB 79.6 MB
Events in quadrant A3,632,464567,361
Events in quadrant B2,431,005585,243
Events in quadrant C2,374,369543,614
Events in quadrant D4,155,534470,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140702
B0107832
C0105162
D0159742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51581673.237689%
B5158190.368360%
C515880.155099%
D51585069.810004%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7070 5159 123 123 1.74% 2.38%
B 7070 5159 18 18 0.25% 0.35%
C 7070 5159 3 3 0.04% 0.06%
D 7070 5159 454 454 6.42% 8.80%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 600391 5408.48 541 530 110.9
A 15 237 542719 4888.49 541 530 110.9
A 15 222 253095 2277.18 541 530 110.9
B 0 229 136873 1321.33 541 527 103.2
B 5 255 63594 611.18 541 527 103.2
B 0 230 27078 257.31 541 527 103.2
C 15 214 231461 1883.17 529 533 122.6
C 14 254 52505 423.82 529 533 122.6
C 0 239 19439 154.17 529 533 122.6
D 12 233 1218593 9792.43 508 492 124.4
D 12 16 491964 3950.99 508 492 124.4
D 1 52 319598 2565.32 508 492 124.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter